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Chemistry Semester 1 Exam 2022

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Last updated over 3 years ago
44 questions
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Question 1
1.

Question 2
2.

Question 3
3.

Question 4
4.

Question 5
5.

Question 6
6.

Question 7
7.

Question 8
8.

What is the density of an object having a mass of 7.9 g and a volume of 37.15 cubic centimeters?

Question 9
9.

What is the volume of an object with a density of 9.09 g/cm3 and a mass of 542 g?

Question 10
10.

Question 11
11.

Question 12
12.

Question 13
13.

How many significant figures in the number 50.010?

Question 14
14.

Question 15
15.

Question 16
16.

Question 17
17.

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Question 28
28.

Question 29
29.

Question 30
30.

Question 31
31.

Question 32
32.

Question 33
33.

Give the electron dot diagram for the element Iodine.

Question 34
34.

Give the electron configuration for a neutral atom of beryllium.

Question 35
35.

Question 36
36.

Question 37
37.

Question 38
38.

Question 39
39.

Which group of elements in the periodic table is known as the alkali metals ?

Question 40
40.

What is another name for column 17 elements?

Question 41
41.

Question 42
42.

Question 43
43.

EXTRA CREDIT: __________________ is the most abundant state of matter found in the universe.

Question 44
44.

Essay--Write the answer to one essay question in the space provided below.
FCA’s 1. Write in complete sentences and paragraph form.
2. Use Chapter 3 terminology to answer questions(example: substance, element, compound, solution, etc...).
3. Provide inferences, other thoughts, or personal experiences in your answer whenever possible.
Essay Questions to choose from....

Choice #1 Give an example of a physical or chemical change and explain what makes it only a physical or chemical change.

Choice #2 Explain why the atomic radius of an element changes as you go left to right on the periodic table and how the atomic radius changes as you go top to bottom on the periodic table.

Which is the state of matter that has a definite shape and definite volume?
plasma
solid
gas
liquid
Which is the state change in which a gas becomes a liquid?
freezing
sublimation
melting
condensation
Which is the type of separation technique being demonstrated in the figure?
distillation
chromotography
crystallization
filtration
Which is the state of matter shown in this figure?

gas
plasma
solid
liquid
Which of the following substances is an element?
baking soda
iron
salt
sugar
Which is NOT a chemical change?
an egg is cooked
ingredients for a cake are stirred together
a bar of iron rusts
a piece of wood is burned
Which is a compound?
sodium
mercury
carbon dioxide
gold
This radioactive particle has two protons and two neutrons.
alpha
meson
beta
gamma
Which subatomic particle has a negative charge?
neutron
alpha particle
proton
electron
The particles that are found in the nucleus of an atom are ____.
protons and electrons
electrons only
neutrons and electrons
protons and neutrons
Which numbers below have 1 significant figure
1,000
9x10-2
0.00030
0.0006
1.00x103
200.
60.
All atoms of the same element have the same ____.
number of neutrons
mass numbers
mass
number of protons
Isotopes of the same element have different ____.
chemical behavior
positions on the periodic table
atomic numbers
mass numbers
Who was the man who lived from 460B.C.–370B.C. and was among the first to suggest the idea of atoms?
Thomson
Atomos
Democritus
Dalton
Question 18
18.
Question 19
19.
Question 20
20.
Question 21
21.
Question 22
22.
Question 23
23.
Question 24
24.
Question 25
25.
Question 26
26.
Question 27
27.
Which of the following elements is a d-block element?
Cs
Cf
C
Cd
Cl
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
3d
3f
4s
2d
Which is the correct electron dot diagram for the element Silicon (Si)?
A
B
C
D
What is the electron configuration of potassium?
1s22s22p63s23p64s1
1s22s23s23p63d1
1s22s22p63s23p3
1s22s22p63s23p24s1
How many energy sublevels are in the second principal energy level?
1
4
3
2
What is another name for the representative elements?
Group C elements
Group B elements
Group A elements
Transition elements
Which of the following elements is in the same period as phosphorus?
magnesium
nitrogen
oxygen
carbon
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Pt
V
Li
Kr
Which of the following elements has the smallest atomic radius?
chlorine
selenium
sulfur
bromine
Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
JJ Dobereiner
Henry Moseley
John Newlands
Dmitri Mendeleev
What is the element with the highest electronegativity value?
calcium
fluorine
helium
cesium